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한국생태학회 / v.16, no.2, 1993년, pp.159-168 
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보리수나무의 질소고정활성에 대한 환경요인의 영향
( Effects of Environmental Factors on the Nitrogen Fixation Activity in Elaeagnus umbellata ) |
| ;;;;; 경북대학교 자연과학대학 생물학과;경북대학교 자연과학대학 생물학과;경북대학교 자연과학대학 생물학과;서울대학교 자연과학대학 생물학과;;
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| 초 록 |
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| The seasonal changes of symbiotic nitrogen-fixation activity and environmental factors of autumn olive plant (Elaeagnus umbellata Thunb.), which is an important constituent species of temperate vegetation and a non-leguminous root nodule plant interacting with Frankia sp., were quantitatively analyzed inthe natural vegetations during hegrowing period. The acetylene redution April and showed two peaks of 133 and $145{mu}M;C_2H_4;{cdot};gfw^{-1};{cdot};hr^{-1}$ in early June and mid September. The nitrogenase activity decreased to 10~30% during hot dry summer frommid June to the end of August, and disappeared during the dormant period of winter. The optimum rhizoshere. diurnal change showed the maximum activity in the mid-day and the minimum in the mid-night. The average contents of total nitrogen in each organ changed in the ranges of 42.5~40.1, 40.2~36.3, 30.3~28.6 and 18.4~16.2mgN $gdw^{-1}$ for nodule, leaf, root, and stem, respectively. The soil conditions of rhizosphere were weak acidic, ad seasonal variations of $NO_3^--N,;NH_4^+-N,;PO_4^{3-}-P$ and water contents were in the ranges of 48.3~79.5ppm,5.1~13.9ppm, 4.4~$9.9{mu}M$ and 14.5~39.4%, respectively. |
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| 키워드 |
| Environmental factors;Nitrogen fixation;Elaeagnus umbellata; |
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The Korean Journal of Ecology / v.16, no.2, 1993년, pp.159-168
한국생태학회
ISSN : 1225-0317
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199311919965990)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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